[Milsurplus] PRC-47 oscillator module question

[Joe LeKostaj]

Hello. Recently I acquired an O-1032 oscillator module from the 
PRC-47 with the thought of using it as a cheap frequency reference on 
my bench. What appeared to be red sand was falling out of the 
openings of the housing. Upon opening it completely, a lot of the 
stuff came out! Then I thought, could it have been the remains of 
some type of insulation for the TCXO board? I noticed that the board 
itself seemed to have no mounting holes and was merely supported by 
its wires, as if perhaps it was once surrounded by foam. Can anyone 
confirm whether the TCXO board was actually mounted this way? Also, 
can anyone please provide a schematic of this module?

BTW, an interesting paper about frequency standards written by Marvin 
Frerking, the well-known expert in oscillator design, which mentions 
this PRC-47 TCXO can be found at 
http://www.ieee-uffc.org/fc_history/FRERKING/frerking.htm

Tnx & 73,
Joe K9LY